KLV-32D300A, KLV-40D300A, KLV-46D300A (serv.man2) - Sony TV Service Manual (repair manual). Page 7

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When safety shutdown occurs, LED display reports the cause by using the Lighting patterns as indicated below. Since there are
various failure items in WAX model. Light blinking is used so that shutdown causes can be judged from the number of blinking times.
The items corresponding to the number of blinking times are indicated as follows

Example : The figure above shows a LED display when SHUTDOWN is caused by an DC. Alert 2. It repeats flashing for a

specified number of times in 0.3 sec/cycle, has a 2 seconds interval of lighting-off, and again repeats flashing for the
same number of times. Please note that a 2 seconds interval of lighting-off is fixed regardless of abnormal state types.

2.0 sec

2.0 sec

0.3 sec

0.3 sec

2 times

Main voltage trouble (REG12V)

•

 Power supply voltage error.

3 times

DC_ALERT 1 (D.3.3V)

•

 Confirm the voltage if the right voltage doesn’t appear

  about D3. 3V,VDDMQO(=2.5V)

•

 If it is D3. 3V,VDDMQO(=2.5V), confirm about 3.3V input

  IC7001 5th Pin and F7000 is not open.

•

 If it is VD1.8V, confirm about 3.3V input IC7002 5th Pin

  and F7000 is not open.

•

 If it is VD1.8V, confirm about 3.3V input IC7000 12th Pin

  and PS7000 is not open.

4 times

DC_ALERT 2 (FE3.3V)

5 times

DC_ALERT 3 (PANEL 12V)

•

 Confirm, the voltage of REG12V is about 12V.

•

 If no voltage is on REG12V, Confirm R3031, R3034,

  R3037 is mounted.

•

 If no voltage is on REG12V, Confirm REG12V is short-

  circuits in GND.

•

 If REG12V is not short-circuits in GND, change PWB to

  new one.

6 times

BackLight trouble (PANE_DET=0V)

•

 Confirm, about D3. 3 input to Q4014/Q4015.

•

 If 6 times, change backlight-board.